I purchased (private sale) my 2003 RSMV this spring 38,000 km (24,000 miles) on it, had it serviced prior to taking it out. The exhaust popping has been there right from the start (primarily when decelerating but it happened for the first time today when I started it). I have been reading the threads on this issue and have done what has been suggested. The AIS was removed (previous owner), installed a baron tachometer (thanks Freebird, your thread outlining how to install this was bang on), bought a carb tune so I could check the sync and all is good. Went back to the dealer asked if they had any suggestions and he told me to use this fuel additive to clean the carbs \ jets. I got the impression he did not see this as a major issue. I did as he suggested abd the popping persists. Is it a major issue or is it just an annoyance. Does anyone have any other suggestion I could try to eliminate the popping? A friend said the valves might need adjusting?